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 Post subject: Volume, find side length questionPosted: Thu, 7 Jun 2012 07:09:19 UTC

Joined: Thu, 31 May 2012 06:36:48 UTC
Posts: 5
Can't figure out this last question. I had help from my dad the other day and I lost my notes, all I can find is that we somehow got the answer as 9cm^2..

If anyone could help me out by solving this showing the work. Thanks in advance!

"The side length, s, of a cube is related to its volume, V, by the formula s=V ^1/3. A cube box when filled with materials has a volume of 729cm^2. What is the side length of the cube box used?"

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 Post subject: Re: Volume, find side length questionPosted: Thu, 7 Jun 2012 09:15:42 UTC
 S.O.S. Oldtimer

Joined: Fri, 27 Jul 2007 10:17:26 UTC
Posts: 278
Location: Chandler, AZ, USA

First, the volume must be in cubic cm .

The formula is , so what number cubed is 729? This is the same as asking for the cube root of 729, which is 9 cm (it must be a length, so it cannot be , which would be an area).

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